STM32F746ZG + IHM08M1 not all PWM Channels are used but motor still spinning.

[VKost.2]

Hi!

I am using STM32F746ZG + IHM08M1, I removed all bridges as recommended in Motor Profiler tool, and then I generated a project with Workbech. What I spotted that motor spins not that smooth like with F3 or F4 series.

While testing I found that only CH1, CH3, CH1N channels are used to spinn the motor.

CH2N, CH3N are assigned to pins PE10, PE12 that are not even connected to the IHM08M1.

When I reassign them correctly the motor stops working.

I wanted to use other power board, based on the configuration and code. But now I am not sure how does this work.

Can some one explain why this F746 board is so strangely configured?

[Cristiana SCARAMEL · Accepted solution]

Hello @VKost.2​,

in the Motor Profiler tool the configuration for X-NUCLEO-IHM08M1 board is available if used only with NUCLEO-F303RE or NUCLEO-F302R8.

If you use a different control board - with STM32F746ZG - you cannot correctly drive the Power board.

[Edit: in my previous tests I was using an old version of Motor Profiler (5.4.3) where the board NUCLEO-F746ZG was not yet present].

If you want to test the X-NUCLEO-IHM08M1I suggest to use a control board compliant with ST tools.

For instance if you want to uso the dedicated X-CUBE-SPN8 software expansion for STM32Cube you can choose among NUCLEO-F302R8 or NUCLEO-F401RE.

Let me know if I answered to your doubts.

[Laurent Ca...]

The question has been set only to the "STM32 Motor Control" topic (the question is only about the STM32 MC SDK). 

Best regards